engineering recuitment UPCL AE (E&M) 2021 Mock Test Thermodynamics Second Law of Thermodynamics and Entropy Entropy and Irreversibility
For a thermodynamic cycle to be irreversible, it is necessary that
1
\(\oint {\frac{{\delta Q}}{T} < 0}\)
2
\(\oint {\frac{{\delta Q}}{T} = 0}\)
3
\(\oint {\frac{{\delta Q}}{T} > 0}\)
4
\(\oint {\frac{{\delta Q}}{T} \ge 0}\)